Okay. I know enough NOT to simply wire both the stereo and the VHF to the same remote speaker in the cockpit. (Could ruin both radios.) And, yes, it's been dealt with previously in this forum VHF and Stereo
Still, with two speakers going, some Channel 16 receptions are inaudible because music continues to play.
What I'm looking for is a priority switch for a single cockpit speaker: Play FM music from Input B until a VHF signal (above a certain squelch level) comes in on Input A, in which case immediately override Input B music.
My question: does anybody make such a switch? Or an external speaker that performs the same function?